Add temporary page for pages that does not yet exists

views/layout.erb

@@ -40,7 +40,7 @@
       <a href="https://webmail.netig.net" target="_blank" rel="noopener noreferrer">NETmail ↗</a>
       <a href="https://cloud.netig.net" target="_blank" rel="noopener noreferrer">NETcloud ↗</a>
       <a href="https://git.netig.net" target="_blank" rel="noopener noreferrer">NETgit ↗</a>
-      <a class="topbar__account" href="/login">Mon espace ➜</a>
+      <a class="topbar__account" href="/temporary_page">Mon espace ➜</a>
     </nav>
   </header>